TY - RPRT TI - Expansion of CRISPR loci with multiple memories of infection enables the survival of structured bacterial communities AU - Pyenson, N. C. AU - Marraffini, L. A. PY - 2019 DO - 10.1101/747212 UR - https://www.biorxiv.org/content/10.1101/747212v1 ID - 10.1101/747212 ER -